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here are the arcs - 1 360 hunter 15', 2 ~180+ hunter 15', 1 ~120 hunter 15', 1 ~120 hunter 12', 2 ~120' rainbird. the yard has some curves. not perfect rectangle. i may be interested in the tech if suggestions don't work. also, the valve on the strong zone looks like a rainbird you would see at home depot. the valve on the weak zone looks like more of a professional grade hunter. thanks

Tell us the arcs please on the heads...the 15foot adj's use almost 2gpm at 180 degrees....that would be too much gallonage already just with them....the 3/4 cl200 that your system is more than likely piped with can't handle it.

I could still refer you to a tech...and it isn't me if that is what you are wondering....I am not in the valley anymore....

Could you install another zone valve and run some of the heads on an additional zone? Definitely try smaller nozzles where they're closer together. There are also 10 and 8 foot radius nozzles (for those you buy the pattern you need, and not a variable-arc model)

they are a mix of half, full, .... i started closing them off. i tried what you suggested - when two were shut off, all the other heads were fully up with high pressure. when one shut off, it was stronger but not as much as both. the distance apart ranges from ~12-13ft down to about ~9. would it worth putting some 12ft nozzles in the areas that are closer together? are different brands better for lower pressure situation? anything else i should be checking to make sure something else isn't wrong? thanks for your help

Give us a run down of the heads.....7 heads....we need to know what all 7 nozzles are and we can tell what may be happening.

Where in Arizona? when I was there, it was very typical of most installers to install the entire system with 3/4 pvc....that means you have very little water available...is the water source a hosebibb off the back of the house? also very typical.....